Viessmann Vitodens 200-W System Quick start guide

VIESMANN VITODENS 200-W
Gas condensing boiler
17.0 to 105.0 kW
as a multi boiler system up to 840.0 kW
VITODENS 200-W Type WB2C
Wall mounted gas condensing boiler,
with modulating MatriX cylinder burner for natural gas and LPG
for open or balanced flue operation
5822 432 GB 5/2011
Technical guide

Index
1. Vitodens 200-W 1.1 Product description ....................................................................................................... 4
1.2 Specification ................................................................................................................. 6
■Vitodens 200-W, 45 and 60 kW ................................................................................ 7
■Vitodens 200-W, 80 and 105 kW .............................................................................. 10
2. Installation accessories 2.1 Product description ....................................................................................................... 13
■ Installation accessories for the Vitodens 200-W, 45 and 60 kW ............................... 13
■ Installation accessories for the Vitodens 200-W, 80 and 105 kW ............................. 23
■ Installation accessories for multi boiler systems ....................................................... 24
3. DHW cylinder 3.1 Product description ....................................................................................................... 25
4. Design information 4.1 Siting, installation .......................................................................................................... 25
■ Siting conditions for open flue operation (appliance type B) ..................................... 25
■ Siting conditions for balanced flue operation (appliance type C) .............................. 25
■ Operation of the Vitodens in wet areas ..................................................................... 26
■ Electrical connection ................................................................................................. 26
■ Gas connection ......................................................................................................... 27
■ Minimum clearances ................................................................................................. 27
■ Pre-installation for installing the Vitodens 200-W directly onto a wall (single boiler) 28
■ Pre-installation, multi boiler system .......................................................................... 28
4.2 Condensate connection ................................................................................................ 34
■ Condensate drain and neutralisation ........................................................................ 34
4.3 Hydraulic connection .................................................................................................... 36
■ General information .................................................................................................. 36
■ Expansion vessels .................................................................................................... 37
■ Multi boiler systems .................................................................................................. 37
■ Low loss header ........................................................................................................ 37
5. Control units 5.1 Vitotronic 100, type HC1B, for constant temperature operation ................................... 38
■ Structure and functions ............................................................................................. 38
■ Specification Vitotronic 100, type HC1B ................................................................... 39
5.2 Vitotronic 200, type HO1B, for weather-compensated operation ................................. 40
■ Specification Vitotronic 200, type HO1B ................................................................... 41
5.3 Vitotronic 300-K, type MW2B for multi boiler systems .................................................. 42
■ Cascade control unit for the Vitodens 200-W with Vitotronic 100 ............................. 42
■ Structure and function ............................................................................................... 42
■ Specification, Vitotronic 300-K .................................................................................. 44
■ Delivered condition Vitotronic 300-K ......................................................................... 44
Index
2VIESMANN VITODENS 200-W
5822 432 GB

5.4 Vitotronic accessories ................................................................................................... 45
■ Assignment to control unit types ............................................................................... 45
■ Vitotrol 100, type UTA ............................................................................................... 45
■ Vitotrol 100, type UTDB ............................................................................................ 46
■ External extension H4 ............................................................................................... 46
■ Vitotrol 100, type UTDB-RF ...................................................................................... 47
■ Notes regarding room temperature hook-up (RS function) for remote control units . 47
■ Information regarding the Vitotrol 200A and 300A .................................................... 47
■ Vitotrol 200A ............................................................................................................. 47
■ Vitotrol 300A ............................................................................................................. 48
■ Room temperature sensor ........................................................................................ 49
■ Mounting base for programming unit ........................................................................ 49
■ Radio clock receiver .................................................................................................. 49
■ Vitocom 100, type GSM ............................................................................................ 50
■ Mixer extension kit with integral mixer motor ............................................................ 50
■ Mixer extension kit for separate mixer motor ............................................................ 51
■ Extension kit for one heating circuit with mixer in conjunction with Divicon heating
circuit distributor ........................................................................................................ 51
■ Vitotronic 300-K extension for heating circuits with mixers 2 and 3 .......................... 52
■ Extension kit for one heating circuit with mixer for the Vitotronic 300-K ................... 52
■ Immersion thermostat ............................................................................................... 52
■ Contact thermostat .................................................................................................... 53
■ Immersion temperature sensor ................................................................................. 53
■ Solar control module, type SM1 ................................................................................ 53
■ Immersion temperature sensor ................................................................................. 54
■ LON communication module ..................................................................................... 54
■ LON connecting cable for data exchange between control units .............................. 55
■ Extension of the connecting cable ............................................................................ 55
■ Terminator (2 pce) .................................................................................................... 55
■ KM BUS distributor ................................................................................................... 55
■ Internal extension H1 ................................................................................................ 56
■ Internal extension H2 ................................................................................................ 56
■ Extension AM1 .......................................................................................................... 56
■ Extension EA1 .......................................................................................................... 57
6. Appendix 6.1 Regulations / Directives ................................................................................................ 57
■ Regulations and Directives ....................................................................................... 57
7. Keyword index .............................................................................................................................................. 59
Index (cont.)
VITODENS 200-W VIESMANN 3
5822 432 GB

1.1 Product description
AInox-Radial heat exchanger made from stainless steel – for high
operational reliability and a long service life. Large heating output
in the smallest of spaces
BModulating MatriX cylinder burner for extremely clean combustion
and quiet operation
CVariable speed combustion fan for quiet and economical opera-
tion
DGas and water connections
EDigital boiler control unit
Vitodens 200-W wall mounted condensing boilers up to 105 kW are
especially suitable for installation in apartment buildings and commer-
cial or public buildings. For these, the Vitodens 200-W offers an afford-
able, space saving solution – either as a single unit up to 105 kW or
as a cascade with up to eight boilers and a heating output up to 840
kW.
The Inox-Radial heat exchanger made from stainless steel offers high
output in the tightest of spaces. This enables particularly efficient oper-
ation with standard seasonal efficiency [to DIN] up to 98 % (Hs) [gross
cv]/109 % (Hi) [net cv].
The Vitotronic 300-K cascade control unit regulates up to four Vitodens
200-W as a single heating centre. In this way, the boiler output is auto-
matically matched to the heat demand. This means that, subject to the
prevailing heat demand, either one boiler modulates or all four boilers
operate concurrently.
For creating cascade systems, we offer perfectly matching system
components, e.g. control units with up to four appliances, fully insula-
ted hydraulic cascades and flue gas headers.
Recommended applications
High heating output from a compact, user friendly wall mounted boiler,
suitable for the following applications:
■ Systems with few, large-demand consumers, e.g. fan heaters in
supermarkets/markets, workshops and industrial premises, nurser-
ies, garages and DHW heating systems
■ Systems with several heating circuits for underfloor and/or static
radiators in apartment buildings, central heating plants for terraced
houses, office buildings and administration premises – particularly
suitable for attic heating centres
■ Heating of public buildings, such as sports centres and multi purpose
halls, schools, kindergartens
■ Suitable for installation in basement boiler rooms, on single floors or
in the attic
Benefits at a glance
■ Option of cascade control with up to eight boilers with a rated heating
output from 45 kW to 840 kW
■ Standard seasonal efficiency [to DIN] up to
98 % (Hs) [gross cv]/109 % (Hi) [net cv]
■ Durable and efficient through the Inox-Radial heat exchanger
■ Modulating MatriX cylinder burner with a long service life thanks to
stainless steel MatriX mesh – resistant to high temperature loads
■ Easy-to-operate Vitotronic control unit with plain text and graphic
display
■ The programming unit part of the control unit can also be fitted on a
wall mounting base (accessory)
■ Lambda Pro Control combustion controller for all gas types – saving
costs by extending the inspection intervals up to 3 years [in Ger-
many]
■ Quiet operation through low fan speed
Delivered condition
Wall mounted gas condensing boiler with Inox-Radial heat exchanger,
modulating MatriX cylinder burner for natural gas and LPG to DVGW
Code of Practice G260 [Germany], plus wall mounting bracket.
Fully plumbed and wired. White epoxy-coated casing.
Packed separately:
Vitotronic 100 for constant temperature mode
or
Vitotronic 200 for weather-compensated operation.
Preset for operation with natural gas. A conversion within gas groups
E/LL is not required. The conversion to LPG is made at the gas valve
(a conversion kit is not required).
Multi boiler systems
Multi boiler systems for open flue operation with 2, 3 or 4 boilers.
Vitodens 200-W
4VIESMANN VITODENS 200-W
1
5822 432 GB

Installation with a self-supporting mounting frame in series and
as a single block
Comprising:
■ Hydraulic cascade
■ Connection set for every boiler with:
– Connection lines formed to suit
– Circulation pump (3-stage or high efficiency)
– Ball valves
– Drain & fill valve
– Check valve
– Gas shut-off valve
– Safety valve
■ Thermal insulation
■ Weather-compensated, digital cascade and heating circuit control
unit Vitotronic 300-K
■ Cascade communication module for each boiler
■ Self-supporting mounting frame
Note
Order circulation pumps for heating circuits and cylinder heating sep-
arately.
Tested quality
CE designation according to current EC Directives
Meets the requirements for the "Blue Angel" certificate of environmen-
tal excellence to RAL UZ 61.
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 5
5822 432 GB
1

1.2 Specification
Gas boiler, series B and C, category II2N3P II2N3P II2N3P II2N3P
Gas condensing boiler
Rated heating output range
45 and 60 kW: Specification to EN 677.
80 and 105 kW: Specification to EN 15417.
TV/TR = 50/30 °C kW 17.0-45.0 17.0-60.0 30.0-80.0 30.0-105.0
TV/TR = 80/60 °C kW 15.4-40.7 15.4-54.4 27.0-72.6 27.0-95.6
Rated heat input kW 16.1-42.2 16.1-56.2 28.1-75.0 28.1-98.5
Type WB2C WB2C WB2C WB2C
Product ID CE-0085BR0432
IP rating IP X4D to EN 60529
Gas supply pressure
Natural gas mbar 20 20 20 20
LPG mbar 50 50 50 50
Max. permissible gas supply pressure*1
Natural gas mbar 25.0 25.0 25.0 25.0
LPG mbar 57.5 57.5 57.5 57.5
Power consumption (delivered condition) W 56 82 90 175
Weight kg 65 65 83 83
Heat exchanger capacity l 7.0 7.0 12.8 12.8
Max. flow rate
Limit for the use of hydraulic separation
l/h 3500 3500 5700 5700
Rated circulation water volume at TV/TR = 80/60 °C l/h 1748 2336 3118 4106
Permiss. operating pressure bar 4 4 4 4
Dimensions
Length mm 380 380 530 530
Width mm 480 480 480 480
Height mm 850 850 850 850
Gas connection R ¾ ¾ 1 1
Connection values
relative to the max. load
with gas
Natural gas E m3/h 4.47 5.95 7.94 10.42
Natural gas LL m3/h 5.19 6.91 9.23 12.12
LPG kg/h 3.30 4.39 5.88 7.74
Flue gas parameters*2
Flue gas category to G 635/G 636 G52/G51 G52/G51 G52/G51 G52/G51
Temperature (at 30 °C return temperature)
– at rated heating output °C 35 40 35 40
– at partial load °C 33 35 33 35
Temperature (at 60 °C return temperature) °C 65 70 65 70
Mass flow rate
Natural gas
– at rated heating output kg/h 81.2 110.6 147.5 193.3
– at partial load kg/h 31.1 31.1 55.8 55.8
LPG
– at rated heating output kg/h 78.2 106.7 143.8 185.4
– at partial load kg/h 26.6 26.6 46.4 46.4
Available draught Pa 250 250 250 250
mbar 2.5 2.5 2.5 2.5
Standard seasonal efficiency [to DIN] at
TV/TR = 40/30 °C % up to 98 (Hs) [gross cv]/109 (Hi) [net cv]
Average condensate volume
for natural gas and TV/TR = 50/30 °C l/day 14-19 23-28 25-30 35-40
Internal diameter of the line to
the expansion vessel DN 22 22 28 28
Safety valve DN 22 22 22 22
Condensate connection (hose nozzle) Ø mm 20-24 20-24 20-24 20-24
*1 If the gas supply pressure is higher than the maximum permitted value, install a separate gas pressure governor upstream of the system.
*2 Calculation values for sizing the flue system to EN 13384.
Flue gas temperatures measured as gross values at 20 °C combustion air temperature.
The flue gas temperature at a return temperature of 30 °C is significant for the sizing of the flue system.
The flue gas temperature at a return temperature of 60 °C is used to determine the application range of flue pipes with maximum permissible
operating temperatures.
Vitodens 200-W (cont.)
6VIESMANN VITODENS 200-W
1
5822 432 GB

Gas boiler, series B and C, category II2N3P II2N3P II2N3P II2N3P
Gas condensing boiler
Rated heating output range
45 and 60 kW: Specification to EN 677.
80 and 105 kW: Specification to EN 15417.
TV/TR = 50/30 °C kW 17.0-45.0 17.0-60.0 30.0-80.0 30.0-105.0
TV/TR = 80/60 °C kW 15.4-40.7 15.4-54.4 27.0-72.6 27.0-95.6
Flue gas connection Ø mm 80 80 100 100
Ventilation air connection Ø mm 125 125 150 150
Vitodens 200-W, 45 and 60 kW
Multi boiler systems
For further details regarding multi boiler systems, see page 28.
40
100
200
752
1975 1700
850
380
875
1166
176
GCB D F
E
A
L
M
O
H
R
K
N
240
305
400
B
902
982
S
80
160
480
P
AExpansion vessel connection G 1
BSafety valve
CHeating flow G 1½
DCylinder flow G 1½
EGas connection R ¾
FCylinder return G 1½
GHeating return G 1½
HCable entry area at the back
KConnection sets (accessory)
Shown without thermal insulation (standard delivery, connection
sets)
LWithout connection sets
MWith connection sets
NRecommended dimension for a single boiler system
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 7
5822 432 GB
1

ORecommended dimension for a multi boiler system
PBalanced flue connection with bend (accessory)
RCondensate drain
STop edge finished floor
Note
Lay all required supply cables on site and route them into the boiler
near H.
Variable speed high efficiency circulation pump in the heating circuit connection set (accessory)
This circulation pump is a highly efficient pump with more than 50 %
lower power consumption than conventional pumps.
Matching the pump rate of the circulation pump to the individual system
conditions reduces the power consumption of the heating system.
Circulation pump VI Para 25/1-7
Rated voltage V~ 230
Power consumption W max. 70
min. 5
Variable speed (Δp constant or Δp variable), fully wired.
Note
When operating in multi boiler systems, select speed control
Δ
p con-
stant.
Residual head of the circulation pump
0
0 1000
Flow rate in l/h
2000
Residual head in mbar
100
200
300
400
500
600
700
3000
Max.
10
0
20
60
30
40
50
70
kPa
3-speed heating circuit pump in the heating circuit connection set (accessory)
Circulation pump VIRS 25/7-3
Rated voltage V~ 230
Rated current A max. 0.58
min. 0.30
Capacitor µF 3.5
Power consumption W Stage 1 62
Stage 2 92
Stage 3 132
3-stage, fully wired ready, to plug in.
Vitodens 200-W (cont.)
8VIESMANN VITODENS 200-W
1
5822 432 GB

Residual head of the circulation pump
ABC
0
0 200 400 600 800 1000
Flow rate in l/h
1200 1400 1600 1800 2000 2200 2400 2600
Residual head in mbar
0
kPa
100
10
200
20
300
30
400
40
500
50
600
60
700
70
AStage 1
BStage 2
CStage 3
Pressure drop on the heating water side
For sizing an on-site circulation pump
0 500 1000 1500
0
100
200
300
400
500
600
Pressure drop in mbar
0
10
20
30
40
50
60
kPa
2000 2500 3000 3500
Flow rate in l/h
Circulation pump in the connection set for DHW cylinders
Pump type VI RS 25/6-3
Voltage V~ 230
Power consumption W max. 93
min. 46
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 9
5822 432 GB
1

Residual head of the circulation pump
0 0,5 1 1,5
0
100
200
300
400
500
600
Head in mbar
0
10
20
30
40
50
60
kPa
2 2,5 3 3,5
Pump rate in m³/h
A B C
AStage 1
BStage 2
CStage 3
Vitodens 200-W, 80 and 105 kW
Multi boiler systems
For further details regarding multi boiler systems, see page 28.
100
850
530
P
40
160 160
200
752
1975 1700
480
875
1300
E
L
M
O
CG
K
H
N
236
A
B
D F
ASafety valve
BExpansion vessel connection G1
CBoiler flow 7 42 mm
DCylinder flow 7 35 mm
EGas connection R 1
FCylinder return 7 35 mm
GBoiler return 7 42 mm
HConnection sets (accessory)
Shown without thermal insulation (standard delivery, connection
sets)
Vitodens 200-W (cont.)
10 VIESMANN VITODENS 200-W
1
5822 432 GB

KCable entry area at the back
LWithout connection set (accessories)
MWith connection set (accessories)
NRecommended dimension (single boiler system)
ORecommended dimension (multi boiler system)
PCondensate drain
Note
The heating circuit connection set must be ordered separately.
Note
Lay all required supply cables on site and route them into the boiler
near K.
Variable speed high efficiency circulation pump in the heating circuit connection set (accessory)
This circulation pump is a highly efficient pump with more than 50 %
lower power consumption than conventional pumps.
Matching the pump rate of the circulation pump to the individual system
conditions reduces the power consumption of the heating system.
Circulation pump VI Para 25/1-11
Rated voltage V~ 230
Power consumption W max. 140
min. 7
Variable speed (Δp constant or Δp variable), fully wired.
Note
When operating in multi boiler systems, select speed control
Δ
p con-
stant.
Residual head of the circulation pump
100
Residual head in mbar
00 1000
Flow rate in l/h
200
600
800
1000
300
400
500
700
900
2000 3000 4000
Max.
10
0
20
60
80
100
30
40
50
70
90
kPa
3-speed heating circuit pump in the heating circuit connection set (accessory)
Circulation pump VI UPS 25-100
Rated voltage V~ 230
Power consumption W Stage 1 280
Stage 2 340
Stage 3 345
3-stage, fully wired ready, to plug in.
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 11
5822 432 GB
1

Residual head of the circulation pump
100
Residual head in mbar
00 1000
Flow rate in l/h
200
600
800
1000
300
400
500
700
900
1100
1200
2000 3000 4000 50005000 6000
ABC
10
0
20
60
80
100
30
40
50
70
90
110
120
kPa
AStage 1
BStage 2
CStage 3
Note
Observe further details regarding the use of a low loss header (see
page 37).
If the residual head of the circulation pumps (available as accessories)
is insufficient to overcome the following system pressure drop values,
install an additional, external circulation pump on site.
In such cases, use a low loss header.
Pressure drop on the heating water side
For sizing a circulation pump on site (when connecting to DHW cylinder
connection set)
0 1000 2000 3000
0
100
200
300
400
500
600
Pressure drop in mbar
0
10
20
30
40
50
60
kPa
4000 5000 6000 7000
Flow rate in l/h
Vitodens 200-W (cont.)
12 VIESMANN VITODENS 200-W
1
5822 432 GB

2.1 Product description
Installation accessories for the Vitodens 200-W, 45 and 60 kW
Heating circuit connection set without circulation pump
Part no. 7245 738
Connections G 1½
Comprising:
■ Tee with ball valve
■ Boiler drain & fill valve
■ Safety valve
■ Gas shut-off valve with integral thermally activated safety shut-off
valve
■ Connection G1 for expansion vessel
Heating circuit connection set with variable speed high efficiency
circulation pump
Part no. 7424 757
Connections G 1½
Comprising:
■ Circulation pump
■ 2 tees with ball valve
■ Non-return valve
■ 2 boiler drain & fill valves
■ Safety valve
■ Gas shut-off valve with integral thermally activated safety shut-off
valve
■ Thermal insulation
■ Connection G1 for expansion vessel
Heating circuit connection set with 3-stage circulation pump
Part no. 7247 341
Connections G 1½
Comprising:
■ Circulation pump
■ 2 tees with ball valve
■ Non-return valve
■ 2 boiler drain & fill valves
■ Safety valve
■ Gas shut-off valve with integral thermally activated safety shut-off
valve
■ Thermal insulation
■ Connection G1 for expansion vessel
Connection set for DHW cylinders
Part no. Z006 183
Connections G 1½
Comprising:
■ Circulation pump
■ 2 ball shut-off valves
■ Non-return valve
■ Cylinder temperature sensor
Ball valve
Part no. 7247 373
1 pce G 1¼ with gasket and union nut.
Installation accessories
VITODENS 200-W VIESMANN 13
5822 432 GB
2

Divicon heating circuit distributor
Construction and function
■ Available with R ¾ , R 1 and R 1¼ connections.
■ With heating circuit pump, check valve, ball valves with integral ther-
mometers and 3-way mixer or without mixer.
■ Quick and simple installation through pre-assembled unit and com-
pact design.
■ Low radiation losses through all-round thermal insulation shells.
■ Low electricity costs and precise control characteristics through the
use of high efficiency pumps and optimised mixer curve.
■ Also available with staged pumps.
■ The bypass valve for hydraulic balancing of the heating system is
available as an accessory as a threaded component for inserting into
the prepared hole in the cast body.
■ The overflow valve may be required when using staged pumps to
prevent the heating system running noisily. It is mounted onto the
Divicon.
■ Individually wall mounted or with a double or triple manifold.
■ Also available as kit. For further details, see the Viessmann pricelist.
For part no. in conjunction with the different circulation pumps, see Viessmann pricelist.
The dimensions of the heating circuit distributor are the same, with or without mixer.
E
151
398
A
B
C
D
G 1½
98
120
HV HR
a
b
HV HRHV HR
Divicon with mixer (wall mounting without thermal insulation and with-
out mixer drive extension kit)
HR Heating return
HV Heating flow
AOverflow valve (accessory for multi stage circulation pump)
BBall valves with thermometer (as programming unit)
CCirculation pump
DBypass valve (accessory)
EMixer-3
Heating circuit connec-
tion
R ¾ 1 1¼
Flow rate (max.) m3/h 1.0 1.5 2.5
a (female) Rp ¾ 1 1¼
a (male) G 1¼ 1½ 2
b (female) Rp ¾ 1 1¼
b (male) G 1¼ 1¼ 2
Installation accessories (cont.)
14 VIESMANN VITODENS 200-W
2
5822 432 GB

142
398
A
B
C
HV HR
98
120
D
G 1½
a
b
HV HR
Divicon without mixer (wall mounting, shown without thermal insula-
tion)
HR Heating return
HV Heating flow
AOverflow valve (accessory for multi stage circulation pump)
BBall valves with thermometer (as programming unit)
CCirculation pump
DBall valve
Heating circuit connec-
tion
R ¾ 1 1¼
Flow rate (max.) m3/h 1.0 1.5 2.5
a (female) Rp ¾ 1 1¼
a (male) G 1¼ 1½ 2
b (female) Rp ¾ 1 1¼
b (male) G 1¼ 1¼ 2
Installation example: Divicon with triple manifold
HV HR
120 120 120
b
a
d
c
180 180
HV HR
(shown without thermal insulation)
HR Heating return
HV Heating flow
Dimensions Manifold with heating circuit connection
R ¾ and R 1 R 1¼
a 135 183
b 535 583
c 784 784
d G 1¼ G 2
Installation accessories (cont.)
VITODENS 200-W VIESMANN 15
5822 432 GB
2

Determining the required internal diameter
A
ΔT= 15K
ΔT= 20K
ΔT= 30K
ΔT= 5K
ΔT= 10K
C
B
D
2.5
2.5
Mixer control characteristics
2.0
0.1
0.2
0.5
1.0
1.5
5.0
Flow rate in m³/h
10 20 30 40531 0.1
0.2
0.5
1.0
1.5
2.0
5.0
Heating circuit output
in kW
ADivicon with mixer-3
The identified operating ranges B to D provide optimum control
characteristics with the Divicon mixer:
BDivicon with mixer-3 (R ¾)
Application range: 0 to 1.0 m 3/h
CDivicon with mixer-3 (R 1)
Application range: 0 to 1.5 m 3/h
DDivicon with mixer-3 (R 1¼)
Application range: 0 to 2.5 m 3/h
Example:
Heating circuit for radiators with an output of ² = 11.6 kW
Heating system temperature 75/60 °C (ΔT = 15 K)
c Specific heat capacity
µMass flow rate
²Output
´Flow rate
² = µ · c · ΔT c = 1.163 Wh
kg · K µ
²
c · ΔT =
kg
h
´ = 11600 W · kg · K
1.163 Wh · (75-60) K = 665 m³ h
0.665
´ (1 kg ≈ 1 dm³)
Select the smallest possible mixer within the application range with
value ´.
Result of this example: Divicon with mixer-3 (R ¾)
Bypass valve
Part no. 7464 889
To hydraulically balance the heating circuit with mixer. Inserted into
the Divicon.
Overflow valve
Part no. 7429 738: R ¾
Part no. 7429 739: R 1
Part no. 7429 740: R 1¼
Only with manually controlled heating circuit pump. Fitted onto the
Divicon.
Installation accessories (cont.)
16 VIESMANN VITODENS 200-W
2
5822 432 GB

Manifold
Incl. thermal insulation
Wall mounted with wall mounting bracket to be ordered separately.
The connection between boiler and manifold must be made on site.
For 2 Divicon
Part no. 7460 638 for Divicon R ¾ and R 1
HV HR HV HR
120
495
HV HR
120
135
120
A
180
G 1½ Rp ¾
AConnection option for expansion vessel
HV Heating water flow
HR Heating water return
Part no. 7466 337 for Divicon R 1¼
HV HR HV HR
120
495
HV HR
420
183
120
A
180
G 2
Rp ¾
G 2
AConnection option for expansion vessel
HV Heating water flow
HR Heating water return
Pressure drop
0
0 0.5 1 1.5 2
Flow rate in m³/h
0.5
1
1.5
2
3
2.5
3.5
2.5
Pressure drop kPa
A B
AManifold for Divicon R ¾ and R 1
BManifold for Divicon R 1¼
Installation accessories (cont.)
VITODENS 200-W VIESMANN 17
5822 432 GB
2

For 3 Divicon
Part no. 7460 643 for Divicon R ¾ and R 1
120
HV HR HV HR HV HR
120 120
784
HV HR
135
A
180 180
120
G 1½ Rp ¾
AConnection option for expansion vessel
HV Heating water flow
HR Heating water return
Part no. 7466 340 for Divicon R 1¼
120
HV HR HV HR HV HR
120 120
784
HV HR
183
A
180 180
420
G 2 Rp ¾ G 2
AConnection option for expansion vessel
HV Heating water flow
HR Heating water return
Pressure drop
0
0 0.5 1 1.5 2
Flow rate in m³/h
0.5
1
1.5
2
3
2.5
3.5
2.5
Pressure drop kPa
4
4.5
5
4.5
5.5
A B
AManifold for Divicon R ¾ and R 1
BManifold for Divicon R 1¼
Wall mounting bracket
Part no. 7465 894
for individual Divicon
With screws and dowels.
a
for Divicon with mixer without mixer
a mm 151 142
Part no. 7465 439
for manifold
With screws and dowels.
a
for Divicon R ¾ and R 1 R 1¼
a mm 142 167
Installation accessories (cont.)
18 VIESMANN VITODENS 200-W
2
5822 432 GB

Low loss header
Part no. 7460 649
Flow rate max. 4.5 m3/h
Including thermal insulation and integral sensor well.
The connection between boiler and low loss header must be made on
site.
120
HV HR
447
275
G 1½
A
Rp 1
B
350
HV HR
ASensor well
BOptional blow-down
HV Heating water flow
HR Heating water return
Pressure drop
Pressure drop kPa
001 2 3 4 5
Flow rate in m³/h
2
4
6
8
10
12
14
Part no. 7460 648
Flow rate max. 7.5 m3/h
Including thermal insulation and integral sensor well.
The connection between boiler and low loss header must be made on
site.
G 2
420
523
295
A
HV HR
Rp 2
G 2
B
420
HV HR
Pressure drop
Pressure drop kPa
001 2 3 4 5
Flow rate in m³/h
2
4
6
8
10
12
14
16
6 7 8
Circulation pump curves and pressure drop on the heating water side
The residual pump head results from the difference between the selec-
ted pump curve and the pressure drop curve of the respective heating
circuit distributor or further components (pipe assembly, distributor
etc.).
The following pump diagrams show the pressure drop curves of the
different Dicivon heating circuit distributors.
Maximum flow rate for Divicon:
Installation accessories (cont.)
VITODENS 200-W VIESMANN 19
5822 432 GB
2

■with R ¾ = 1.0 m3/h
■with R 1 = 1.5 m3/h
■with R 1¼ = 2.5 m3/h
Example:
Flow rate ´ = 0.665 m3/h
Selected:
Divicon with mixer R ¾ and circulation pump Wilo VIRS 25/4-3, pump
curve 2, pump rate 0.7 m 3/h
Head of the relevant pump
curve: 28 kPa
Divicon pressure drop: 3.5 kPa
Residual head: 28 kPa – 3.5 kPa = 24.5 kPa.
Note
For further components (pipe assembly, distributor, etc.) determine the
pressure drop and deduct it from the residual head.
Manually controlled heating circuit pumps
Wilo VIRS 25/4-3
min.1
Max. head 3
40
0
10
20
30
0
100
200
300
400
0 0.5 1.0 1.5 2.0 2.5
Pump rate in m³/h
Pressure drop/head mbar kPa
50500
2
ABC
D
ADivicon R ¾ with mixer
BDivicon R 1 with mixer
CDivicon R 1¼ with mixer
DDivicon R ¾, R 1 and R 1¼ without mixer
Wilo VIRS 25/6-3
Head min.1
Head max.3
40
0
10
20
30
0
100
200
300
400
0 0.5 1.0 1.5 2.0 2.5
Pump rate in m³/h
Pressure drop/head mbar kPa
50
500
60
600
2
ABC
D
ADivicon R ¾ with mixer
BDivicon R 1 with mixer
CDivicon R 1¼ with mixer
DDivicon R ¾, R 1 and R 1¼ without mixer
Grundfos VIUPS 25-40
Head min.
Head max.
ABC
D
0
10
20
30
0
100
200
300
40400
0 0.5 1.0 1.5 2.0 2.5
Pump rate in m³/h
Pressure drop/head mbar kPa
ADivicon R ¾ with mixer
BDivicon R 1 with mixer
CDivicon R 1¼ with mixer
DDivicon R ¾, R 1 and R 1¼ without mixer
Grundfos VIUPS 25-60
Max. head
Min. head
60600
40
0
10
20
30
0
100
200
300
400
0 0.5 1.0 1.5 2.0 2.5
Pump rate in m³/h
Pressure drop/head mbar kPa
50500
ABC
D
ADivicon R ¾ with mixer
BDivicon R 1 with mixer
Installation accessories (cont.)
20 VIESMANN VITODENS 200-W
2
5822 432 GB